CHECK CONTAINERS HEALTH

This simple project check if containers deployed on certains url respond well and are not in a state like
Gateway time out or are not returning a 404 error for example. If an abnormal behavior is
returned by a certain containers, then a mail is sent to some people who can fix this.

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WHY THIS PROJECT ?

I decided to code this simple program to solve a problem that we (my classroom mates and I) encountered during
our end of school year project. We developped a workflow devops containing many containers which sometimes go on a
Gateway time out status . To avoid checking containers state every time . I decided to ask my
program to do that for me and send an email alert to me when it detect a unexpected behavior.

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HOW TO RUN THE PROJECT ?

Configuration

1. Create a .env file at the root of the porject and copy the content of .env.exampleinside it and set the values of env variables
2. For those containers that may be checked via a connexion to an api endpoint for example, provide credentials for connexion in .env file Take example on PROD_AMDIN_ID and PROD_ADMIN_PASS
3. If you want certains env variable not to be null make sure to add them to notNullableEnvVarvariable in main.go file
4. Make sure to configure env varibales SMTP_HOST,SMTP_PORT, SENDER_MAIL, SENDER_PASS, RECEIVERS to receive a mail. You can have multiple receivers seperated with ,

Run the project

NB : When coding this project, I projected to run it as cron job on my system. It's the best way so that you may not have to run it manually all the time.

At the root of the project run go run main.go to launch the app. It'll display the logs about containers'health in the terminal.